/*
 * Copyright 2015-2019 The OpenZipkin Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package zipkin2.server.internal.brave;

import com.linecorp.armeria.server.Server;
import java.io.IOException;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import zipkin.server.ZipkinServer;
import zipkin2.storage.InMemoryStorage;

import static org.assertj.core.api.Assertions.assertThat;
import static zipkin2.server.internal.ITZipkinServer.url;

@SpringBootTest(
  classes = ZipkinServer.class,
  webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
  properties = {
    "spring.config.name=zipkin-server",
    "zipkin.self-tracing.enabled=true"
  })
@RunWith(SpringRunner.class)
public class ITZipkinSelfTracing {
  @Autowired TracingStorageComponent storageComponent;
  @Autowired Server server;

  OkHttpClient client = new OkHttpClient.Builder().followRedirects(false).build();

  @Before
  public void clear() {
    ((InMemoryStorage) storageComponent.delegate).clear();
  }

  @Test
  public void getIsTraced_v2() throws Exception {
    assertThat(get("v2").body().string()).isEqualTo("[]");

    Thread.sleep(1000);

    assertThat(get("v2").body().string()).isEqualTo("[\"zipkin-server\"]");
  }

  @Test
  public void postIsTraced_v1() throws Exception {
    post("v1");

    Thread.sleep(1000);

    assertThat(get("v2").body().string()).isEqualTo("[\"zipkin-server\"]");
  }

  @Test
  public void postIsTraced_v2() throws Exception {
    post("v2");

    Thread.sleep(1000);

    assertThat(get("v2").body().string()).isEqualTo("[\"zipkin-server\"]");
  }

  private void post(String version) throws IOException {
    client
        .newCall(
            new Request.Builder()
                .url(url(server,  "/api/" + version + "/spans"))
                .header("x-b3-sampled", "1") // we don't trace POST by default
                .post(RequestBody.create(null, "[" + "]"))
                .build())
        .execute();
  }

  private Response get(String version) throws IOException {
    return client
        .newCall(new Request.Builder()
          .url(url(server, "/api/" + version + "/services"))
          .build())
        .execute();
  }
}
